Function name is in the latest ES6 draft. On Fri Feb 07 2014 at 11:15:31 PM, Timothy Quinn <[email protected]> wrote:
> Digging into ECMA-262, I cannot find this noted but it appears to be > implemented in V8 and SpiderMonkey. > > Mozilla states this as > non-standard<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name>so > I am guessing that its not documented in ECMA-262. > > Is this defined in the specification or did I miss it? If not, +1 on its > standardization into the specification. > > - Tim > > > On Fri, Feb 7, 2014 at 10:52 PM, Timothy Quinn <[email protected]>wrote: > > LOL. I did not realize that was implemented already :) > > Thanks, > - Tim > > > On Fri, Feb 7, 2014 at 10:28 PM, Domenic Denicola < > [email protected]> wrote: > > o.constructor.name seems good? > ------------------------------ > From: Timothy Quinn <[email protected]> > Sent: 2/7/2014 22:26 > To: [email protected] > Subject: Efficient determination of implemented class name > > An area of challenge in JavaScript is the ability to detect a > JavaScript objects implemented class name. I have done this in the past > with some success by parsing the objects constructor but I know that this > depends on the Object constructor being named and is not very efficient as > it requires the processing of a large string. > > Is it possible to include into the ECMA Specification a method of Object > that returns the constructor function name which can be subsequently be > used as an efficient class name detection mechanism? Maybe > <Object>.getFunctionName(). > > My current current slow but steady method for detecting classes is as > follows: > > function objClassName(o){ > if(o===undefined){return "(undefined)" } > if(o===null){return "(null)" } > var a=/function\s+(.+)\s*\(.*\)\s*\{/.exec(o.constructor) > return (a && a[1] ? a[1] : "(unknown)") > }; > > Thanks! > Tim > > > >
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